Blast furnace first slag experiment method and first slag experimental furnace

Abstract

The invention relates to a blast furnace first slag experiment method and a first slag experimental furnace which solves the problem that the current experiment method can not well guide the optimization of furnace material structure for first slag can not be acquired. The first slag experimental furnace comprises an electric furnace and an air distribution cabinet, wherein the electric furnace is provided with a hearth pipe; a graphite crucible positioned on a graphite base is arranged in the hearth pipe; the upper end of the graphite crucible is provided with a center press rod, and the upper end of the center press rod penetrates through the hearth pipe and is provided with an inserted thermocouple; a material surface load readjusting device is arranged on the center press rod; the upper end of the hearth pipe is provided with an upper cover, an exhaust opening and a displacement sensor, and the lower end is provided with a material receiving box and communicated with the air distribution cabinet by a reducing gas inlet; and a pressure difference transmitter is arranged on a connecting pipeline of the reducing gas inlet and the air distribution cabinet. The experiment method obtains first slag by simulating the blast furnace condition through the first slag furnace, records all detecting data on line and carries out chemical analysis and microscopic detection on the first slag, thereby having important guide significance for optimizing the furnace material structure.

Description

technical field [0001] The invention relates to an experimental method for researching primary slag in the blast furnace smelting industry, in particular to an experimental method for primary slag of a blast furnace and an experimental furnace for primary slag. Background technique [0002] The formation of slag in the blast furnace goes through four stages: dripping primary slag, bosh primary slag, tuyere slag, and final slag. The dripping primary slag and the bosh primary slag can be collectively referred to as "primary slag" or simply "primary slag". The characteristics of the formation process of primary slag are usually characterized by indicators such as the initial softening temperature, the initial dripping temperature, and the gas permeability of the ore layer. It is generally hoped that the ore's initial softening temperature should be high, the reflow zone (the difference between the initial dripping temperature and the initial softening temperature) should be na...

AI Technical Summary

Problems solved by technology

This is mainly because the blast furnace is a closed high-temperature reactor, and it is difficult to directly collect samples of primary slag and conduct research on it, whether it is in the production blast furnace or in the traditional experimental blast furnace for the droplet test of primary slag , the cost is very expensive and the results are not ideal

Images